Concept explainers
(a)
To calculate: The pollution levels on January 1, base year by using the information given below:
The pollution level in a certain area might be given by the
where x is the time in years, with
(b)
To calculate: The pollution levels on July 1, base year by using the information given below:
The pollution level in a certain area might be given by the function
where x is the time in years, with
(c)
To calculate: The pollution levels on January 1, following year by using the information given below:
The pollution level in a certain area might be given by the function
where x is the time in years, with
(d)
To calculate: The pollution levels on July 1, following year by using the information given below:
The pollution level in a certain area might be given by the function
where x is the time in years, with
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Trigonometry (11th Edition)
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